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MP1570DN Datasheet(PDF) 3 Page - Monolithic Power Systems

Part # MP1570DN
Description  3A, 23V, 340KHz Synchronous Rectified Step-Down Converter
PDF  11 Pages
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Manufacturer  MPS [Monolithic Power Systems]
Direct Link  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP1570DN Datasheet(HTML) 3 Page - Monolithic Power Systems

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MP1570 – 3A, 23V, 340KHz SYNCHRONOUS RECTIFIED, STEP-DOWN CONVERTER
MP1570 Rev. 1.5
www.MonolithicPower.com
3
1/31/2006
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
© 2006 MPS. All Rights Reserved.
TM
ELECTRICAL CHARACTERISTICS (continued)
VIN = 12V, TA = +25°C, unless otherwise noted.
Parameter
Symbol Condition
Min
Typ
Max
Units
EN Lockout Threshold Voltage
2.2
2.5
2.7
V
EN Lockout Hysteresis
210
mV
Input Under Voltage Lockout
Threshold
VIN Rising
3.80
4.05
4.30
V
Input Under Voltage Lockout
Threshold Hysteresis
210
mV
Soft-Start Current
VSS = 0V
6
µA
Soft-Start Period
CSS = 0.1µF
20
ms
Thermal Shutdown
(4)
160
°C
Note:
4) Guaranteed by design, not tested.
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 12V, VOUT = 3.3V, TA = +25°C, unless otherwise noted.
VOUT
1V/div.
IL
1A/div.
IL
1A/div.
VOUT
10mV/div.
VSW
10V/div.
VIN
100mV/div.
MP1570-TPC03
VOUT
50mV/div.
IL
1A/div.
VOUT
1V/div.
IL
1A/div.
4ms/div.
MP1570-TPC01
Load Transient
Waveforms
1A - 2A STEP
MP1570-TPC04
MP1570-TPC02



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